IBAC

The villain IBAC was originally a loser named Stanley "Stinky"
Printwhistle. Stanley was never successful at anything and desired
power and prestige. He was approached by Lucifer and made an offer:
Lucifer would give Stanley power beyond his wildest imagination if
he would defeat Captain Marvel. The cost to Stanley was his immortal
soul.

Never one for bargins, Stanley accepted Lucifer's offer and the deal was
struck. Stanley was given power of four of the most evil people in
history:

When Stanley said the word IBAC, he became immensely evil and
powerful. Calling himself IBAC, Stanley attempted to defeat Captain
Marvel on a number of occassions, but always met with defeat. Each
defeat left Stanley promising to repent and walk the straight and
narrow, but he invariablely returned to IBAC again.